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回旋管行波放大器的实验最近已经完成,在35.1千兆赫频率下当电子注电压为70千伏、电流为9安时,线性增益高达32分贝,而当电子注电流为3安时,增益为24分贝。回旋行波放大器工作于圆波导的 TE_(01)模式和基本电子回旋频率上。目前,它是个单级器件,没有切断部分或稳定元件。放大器已激励到饱和,当增益为13分贝时,观察到的最大输出功率为26千瓦。饱和开始时增益为30分贝,输出功率约为10千瓦。对于电流为3安的电子注,增益为20分贝时所观察到的最佳效率是7.8%。线性带宽的测量表明,3安的电子注峰值增益为24分贝时,-3分贝带宽约为500兆赫。
The experiment of the gyro-traveling-wave amplifier has recently been completed with a linear gain of up to 32 dB at an electron injection voltage of 70 kV at a current of 9 A at 35.1 GHz and a gain of 32 dB at an electron injection current of 3 A 24 dB. The gyro-traveling-wave amplifier operates on the circular waveguide TE_ (01) mode and the basic electron cyclotron frequency. Currently, it is a single stage device with no cut-off or stabilizing element. The amplifier has been excited to saturation, with a gain of 13 dB, the maximum observed output power of 26 kW. The saturation starts with a gain of 30 dB and the output power is about 10 kW. For an electron injection current of 3 Amps, the best efficiency observed at a gain of 20 decibels is 7.8%. Measurement of the linear bandwidth shows that the 3 dB bandwidth is about 500 MHz when the 3 A electron injection peak gain is 24 dB.